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袖珍电子计算器的一般作用是用于进行数学运算,但还可以扩展其功能,进行多种自动计数。下面以市售Santron724型袖珍电子计算器为例,介绍其在测量发动机转速中的应用。当用这种计算器进行1的累加时,其操作步骤为先打开计算器的电源开关,然后按[1]、[+]两个键,显示屏上就会显示1。这时如果按一次[=]键,显示屏上的数字就会自动加1,即显示2;若再按一次[=]键,就会显示3。只要连续按动n次[=]键,
The general purpose of pocket calculators is to perform mathematical operations, but it is also possible to extend its capabilities for a variety of automatic counts. The following is a commercially available Santron724 portable electronic calculator, for example, describes its application in measuring the engine speed. When using this calculator to accumulate 1, the procedure is to turn on the power switch of the calculator and press [1], [+] keys to display 1 on the display. At this time, if you press the [=] key once, the number on the display will automatically increase by 1 to display 2. If you press the [=] key again, 3 will be displayed. As long as n consecutive press [=] key,